Windshield heater



July 4, 1933. F H R WE 1,916,895

WINDSHIELD HEATER Filed July 1, 1929 .jivenioz UNITED STATES "PATENT ornca FRED E. ROWE, OE GLOUCESTER, MASSACHUSETTS w'mnsnirmn Hnarnn.

Application filed July 1,

lecting upon the inside of the windshield under certain atmospheric conditions renderin the driving of such vehicles dangerous.

ilaving the above difiiculties in View, I have invented an attachment which may be applied to the inside surface of windshields which can be electrically heated from any local source such as the autompbile battery, generator or the like, which will lie agalnst the inner surface otthe windshield 1n the manner of a hot pad when in use, or tapped up out of the way when not m use.

The principal bject, therefore, of my in vention, is an improved heater for windshields and the lik Another object is an electrical windshield heater which has actual contact with the windshield, but at the same time will not impair the vision. therethrough to any practical extent.

Other objects and novel features comprising the construction and operat on of my device will appear the description of the 1nyention progresses.

In the drawing illnstrating the principle of my invention a Fig. 1 is an elevation 015 a windshield with my heater in operation;

Fig. 2 is a cross section taken on the line 2-2 of 1; a

Fig. 3 is a longitudinal cross section taken on the line 3-3 of Fig. 1;

Fig. 4.- is a cross section similar: to Fig. 2, but showing the heater raised as 111 the nonoperating position;

Fig. 5 is a fragmentary detail of the heating elements, and

Fig. 6 is a cross sectional detail of one end 1929. Serial No. 375,111.

of the'heater taken on the line 6-6 of Fig. 1.

Referring to the drawing, 10 indicates a a windshield frame in which the windshield glass 11 is carried. Offset clamp brackets 12 and 13 are secured to the windshield frame 10 55 in any suitable manner such as set screws 14- and 15, threaded in the brackets 12 and 13; the free offset sides 16 and 17 of the brackets l2 and 13 repsectively, are adapted to receive thumb screws 18 and 19 for'the purpose of 59 I clamping the flap member 20 closed position.

The flap 20 is composed of a U shaped frame 21 made from a relatively solid insuin an open or.

1 lating material surrounding on three sides, 9*

two glass plates 22 and 23 the edges of which are beveled at 24 and which engage with over-= lapping edges 25 located on the U frame 21 for t e purpose of retention'within the said U frame 21. A heater element 26 is com- 70 posed of two vertical feed lines 27 and 28 lo" cated at either end of the U frame and adjacent the inner end edges of the two glass members 22 and 23, and longitudinally disposed resistance wires 29 arranged in paral- -lel formation are imbedded in the feed mem bers 26 and 27 by any suitable method such as welding, the reslstance wires 29 being located between the two glass plates 22 and 23 clearly shown in l i s. 2 and 3. m In assem ling the flap 20, the resistance unit 26 is placed between the glass plates 22 and 23 after which the two are slid into the li member 21 and a straight top member 30 having a cross-section corresponding to the U g5 member is fitted down over the top, and plates 31 and 32 are then attached to the flat strip 36. and the ends of the U member 21 by means of screws 33, an opening 34 being provided therein for the entrance of wires 35 and 36 for W the purpose of attaching to the heat unit 26, an insulating eyelet 37- is provided in the opening 35% to insulate the lead wires 35 and 36 from the plates 31 and 32 which are preferably made from metal. 35

A boss 38 is formed of either top end of the U member 21 for the purpose of receiving the thumb screws 18 and 19 threaded in the In operation, the

- brackets 16 and 17 respectively.

ap unit 20 is dropped down in contact with the Wimlshieldl s lees l1 eml maintained in contact thereto loy the screws 18 end 19, eleeti'icel current is supplied to the heater unit 27 by e suitable switch leceteil at any convenient piece in the vehicle and the less 22 end 23 is meiiiteimed et tiny desired egree of heat consistent with its'use. The heat generated .Erom the glass 22 and 23 is transmitted by contect to'tiie gless ll of the Windshield thereby preventing the {formation of ice on the outside of the Windshield glass l1 or moisture on the inside in the immediate vicinity of the windshield CQ'VQKeQl by the flap 20.

The resistance wires 29 ewe very smell being no letgei' time t horse heir e1 even s-iniellet eiiel unless the eye oi the operetei' is inteie iietiiie FRED tit 

